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Alnico® 4 (Isotropic, Cast) Hard Magnetic Alloy

Alnico® 4 (Isotropic, Cast) Hard Magnetic Alloy
Categories: Metal; Electronic/Magnetic Alloy; Ferrous Metal

Material Notes: 56Fe-12Al-27Ni-5Co

 

  Physical Properties   Metric   English   Comments   Density    7.00 g/cc   0.253 lb/in³       Mechanical Properties   Metric   English   Comments   Hardness, Rockwell C    45.0   45.0   Tensile Strength, Ultimate    63.0 MPa   9140 psi   Modulus of Rupture    0.167 GPa   24.2 ksi   Transverse       Electrical Properties   Metric   English   Comments   Electrical Resistivity    0.0000750 ohm-cm   0.0000750 ohm-cm   Magnetic Coercive Force, Hc    729 Oe   729 Oe   Magnetic Remanence, Br    5350 Gauss   5350 Gauss   Magnetic Maximum Energy Product, BH    1.26 MGOe   1.26 MGOe   Curie Temperature    800 °C   1470 °F       Thermal Properties   Metric   English   Comments   CTE, linear    13.1 µm/m-°C   7.28 µin/in-°F   Maximum Service Temperature, Air    590 °C   1090 °F       Component Elements Properties   Metric   English   Comments   Aluminum, Al    12.0 %   12.0 %   Cobalt, Co    5.00 %   5.00 %   Iron, Fe    56.0 %   56.0 %   Nickel, Ni    27.0 %   27.0 %       Descriptive Properties   Demagnetization Induction, Bd (Tesla)   0.3   Intrinsic Magnetic Coercive Force, HCi (Oe)   779




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